Thread-controller for sewing-machines



(No Model.)

D. W. GOODELL. THREAD CONTROLLER FOR SEWING MACHINES.

No. 581,110. Patented Apr. 20, 1897.

TATES DEXTER W. GOODELL, OF GREENFIELD, MASSACHUSETTS, ASSIGNOR TO JI/VILLIS DOWNS, OF NEW HAVEN, CONNECTICUT.

TH READ-CONTROLLER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 581,110, dated April20, 1897. Application filed February 18, 1897. Serial No. 623,929. (Nomodel.)

To all whom it may concern.-

Be it known that I, DEXTER W. GooDELL, of Greenfield, in the county ofFranklin and State of Massachusetts, have invented a new, Improvement inSewing-Machines; and I do hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a front view of a sewing-machine constructed in accordancewith my invention; Fig. 2, a top View of the same; Fig. 3, an enlargedview, partiallyin section, of one of the thread-holders; Fig. 4, an endview of the upper arm of the frame-head, showing a plan View of thesecond thread-holder; Fig. 5, an edge view of the same; Fig. 6, aperspective View of the thread-holding plate detached.

This invention relates to an improvement in sewing-machines, and is animprovement on the machine shown and described in an application filedby me February 3, 1886, Serial No. 190,701, and while applicable tovarious styles of machines is particularly intended for low-pricemachines, in which it is necessary that the attachments and partsthereof shall be of the simplest character.

The object of the present invention is to provide devices for holdingthe thread under slight tension between the spool-support and thetension device and between the tension device and the needle, and sothat during the feeding operation and when the automatic or regulartension is released the thread will not run; and the invention consistsin the construction as hereinafter'described, and particularly recitedin the claims.

The bed-plate A, frame B, head C, drivingwheel D, pitman E, rock-shaftF, spool-support Gr, needle-bar II, and tension device I are shown inthe same manner as in the application above referred to and maybe ofanypreferred construction. In the said application the thread was runfrom the spool mounted on the spool-support through an eye a, mounted onthe frame, and an eye I), mounted on the crank 01 of the rock-shaft F,and from there over a thread-seat d to the tension device 1. I11 orderto avoid the thread running when the tension device is released,I mounta weight K on the upper edge of the frame B adjacent to the thread-seatd, formed with a vertical central opening which is enlarged at its upperend, and this weight is held in position by a post J, which extendsthrough into an opening formed in the frame, where it may be secured inany desired, manner. The post is formed with a downwardly-inclined slot6 near its lower end and with a head L at its upper end, which entersthe recess in the upper end of the weight and prevents the removal ofthe weight, yet permits it to be moved vertically thereon to expose orcover the slot 6.

Surrounding the post and resting upon the frame is a washer M, betweenwhich and the lower face of the weight the thread passes, and the threadis properly located by lifting the weight K to expose the slot E, whenthe thread may be placed therein, and the weight descending lightlyclamps the same between the weight and the washer M and preventsrunning. To prevent running between the tension device I and the needle,I arrange a plate upon the outer face of the upper arm 0 of the head C.

The plate N is rectangular and formed with a depending inwardly-curvedfinger P and with a transverse inwardly-projecting rib f and aninwardly-extending stud g in each corner at the upper end. It is alsoformed with perforations h and 11, arranged one above the other in avertical line. The plate is held in position by a screw Q, extendingthrough the opening 11 into the arm 0, and between the plate and thehead of the screw is a spring j, the tendency of which is to force theplate inward against the arm 0. Extending outward from the arm 0 andthrough the opening h is a guide-pin 7c. The finger P, which extendsdownward,bears against the needle-bar,which is formed with a recess m,in position to receive the finger when the needle-bar is lifted to thelimit of its upward movement, and so that when it moves downward itforces the finger outward, and hence the plate, against the outer faceof the arm 0. The thread is passed from the tension device through theusual guide-eye 01, through the upper end of the needle-bar II, downwardbetween the plate M and the face of the arm 0 to the needle, and so thatas the needle-bar rises to draw the stitch the thread will be free todraw upward between the plate M and the arm 0, but when the needle-bardescends in forming the next stitch the thread will be lightly clampedbetween the said plate and arm and prevented from running too freelybetween the tension device and the needle, and so as to prevent thethread from becoming entangled with the looper.

It will be seen that the devices described are applicable to variousforms of sewing-machines, are exceedingly simple in construction, andeffective in operation.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a sewing-machine, the combination with the frame thereof, of athread-holder mounted on the frame between the tension device andspool-support, and consisting of an upwardly-extending pin formed with aslot extending inwardly and downwardly in one side, and a weightsurrounding said pin, and adapted to pass over and close said slot,substantially as described.

2. In a sewing-machine, the combination with the frame and head thereof,of a needlebar formed with a recess in one side, and a clamping-plateformed with a downwardlyextending, inwardly-curyed finger, and withinwardly-extending ribs and studs, said plate secured to said arm by ascrew, and a spring between the head of said screw and the outer face ofsaid plate, substantiallyas described.

3. In a sewing-machine having a frame, a head, a spool-support and aneedle-bar, a ten sion device mounted between said spo0l-sup port andhead, the combination therewith of a thread-holder arranged between saidspoolsupport and tension device, and consisting of an upwardly-extendingpost formed with a slot extending inwardly and downwardly from one side,a weight mounted on said post and adapted to move up and down thereon toclose said slot, and a plate arranged upon the outer face of the upperarm of thehead, formed with a downwardly and inwardly extending arm,with an inwardly-extending rib and with one or more studs, said platesecured by a screw encircled by a spring, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

D. \Y. GOODELL.

Witnesses: Y

Piiv'rox UsHIXGToN, GEORGE E. \VooD.

